How do wet slides work? Across the top of the slide, where the anti-jumping' netting is, there is a channel of PVC with small holes in. An open hose is inserted about half way into this channel and then when the hose is connected to the tap, water flows into the channel and trickles out the holes. Just a trickle, but enough to make the slide 'SUPER FAST!'. Of course, the whole thing needs drying out afterwards, so on the Monday id drying and cleaning day!